20344023200 has 36 divisors (see below), whose sum is σ = 49664848590. Its totient is φ = 8137608960.

The previous prime is 20344023187. The next prime is 20344023221. The reversal of 20344023200 is 232044302.

It can be written as a sum of positive squares in 3 ways, for example, as 11525310736 + 8818712464 = 107356^2 + 93908^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12714215 + ... + 12715814.

Almost surely, 2^20344023200 is an apocalyptic number.

20344023200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20344023200 is an abundant number, since it is smaller than the sum of its proper divisors (29320825390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20344023200 is a wasteful number, since it uses less digits than its factorization.

20344023200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25430049 (or 25430036 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20344023200 its reverse (232044302), we get a palindrome (20576067502).

The spelling of 20344023200 in words is "twenty billion, three hundred forty-four million, twenty-three thousand, two hundred".